Full Idea
Since mentalism remains neutral on whether mental states need be accessible to an agent ...it does not seem to do justice to the intuitions that drive paradigm internalist positions.
Gist of Idea
'Mentalist' internalism seems to miss the main point, if it might not involve an agent's access
Source
Hamid Vahid (Externalism/Internalism [2011], 2 A)
Book Reference
'Routledge Companion to Epistemology', ed/tr. Bernecker,S/Pritchard,D [Routledge 2014], p.145
A Reaction
The rival view is 'access internalism', which implies that you can act on and take responsibility for your knowledge, because you are aware of its grounding. If animals know things, that might fit the mentalist picture better.